The one-way rolling process of sintered pure molybdenum is numerically simulated by Deform-3D three-dimensional geometric modeling software. The simulation software is equipped with graphic elements and the model is built in combination with relevant size design. The Langrangian incremental form is selected to calculate the plastic deformation during the rolling process. A single step is calculated by the conjugate gradient method, and direct iteration is used between calculation steps. The roll is in contact with the forging, the temperature of the roll is 300 ℃, the interface heat transfer coefficient is 5 N/(sec·mm·℃), the ambient temperature is 20 ℃, and the heat convection coefficient is 0.02 N/(sec·mm ℃). Set different parameters such as Coulomb friction coefficient, rolling temperature, rolling speed, rolling deformation, etc. to explore the most optimal rolling plan. The true strain calculation formula is adopted, through the size of the rolled piece, the temperature of the rolled piece, the roll speed, the push block speed, each movement direction, etc. are set in the pre-processing, and the post-processing module can be based on different movement directions and rolling piece temperatures. Obtain the shape and size change diagram of the rolled piece after rolling; in the grid differentiation mode, the distribution of the metal grid simulated by the software can be observed; in the post-processing module, by selecting different viewing angles, the rolling after rolling can be obtained Equivalent stress and equivalent strain distribution diagram at each position of the piece; in the post-processing module, by cutting at different positions, you can observe the distribution of the damage energy suffered by the different positions of the rolling piece.
